A. Vilanova i Bartroli, E. Gröller:
"Geometric Modeling for Virtual Colon Unfolding";
in: "Geometric Modeling for Scientific Visualization", G. Brunnett, B. Hamann, H. Müller, L. Linsen (ed.); Springer, 2003, ISBN: 3-540-40116-4.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04404526